Remove more libraries directives from server

pkg/analysis_server/lib/src/services/completion/dart/local_library_contributor.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-library services.completion.contributor.dart.local_lib;
-
 import 'dart:async';
 
 import 'package:analysis_server/src/provisional/completion/dart/completion_dart.dart';
 import 'package:analysis_server/src/services/completion/dart/completion_manager.dart';
 import 'package:analysis_server/src/services/completion/dart/optype.dart';
 import 'package:analysis_server/src/services/completion/dart/suggestion_builder.dart'
     show createSuggestion, ElementSuggestionBuilder;
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/dart/element/visitor.dart';
@@ skipping 173 matching lines @@
     LibraryElementSuggestionBuilder visitor =
         new LibraryElementSuggestionBuilder(request, optype);
     for (CompilationUnitElement unit in libraryUnits) {
       if (unit != null && unit.source != request.source) {
         unit.accept(visitor);
       }
     }
     return visitor.suggestions;
   }
 }